Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities
Net income	$ 10,112	$ 8,937
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes	(469)	3,674
Loss on disposal of fixed assets	11	67
Non-cash equity compensation	2,001	1,772
Depreciation and amortization	5,192	5,226
Amortization of debt issue costs	119	120
Deferred rent	665	525
Changes in operating assets and liabilities, net of the effect of acquisitions:
Contract receivables, net	(2,752)	(4,391)
Prepaid expenses and other assets	(102)	1,678
Accounts payable	(587)	(798)
Accrued salaries and benefits	(5,340)	(5,313)
Accrued expenses	(2,858)	(1,315)
Deferred revenue	138	(655)
Income tax receivable and payable	6,932	419
Other liabilities	245	1,057
Net cash provided by operating activities	13,307	11,003
Cash flows from investing activities
Capital expenditures	(3,621)	(5,626)
Payments for business acquisitions, net of cash received		(8,556)
Net cash used in investing activities	(3,621)	(14,182)
Cash flows from financing activities
Advances from working capital facilities	19,757	35,231
Payments on working capital facilities	(38,046)	(28,085)
Debt issue costs		(1,681)
Proceeds from exercise of options	40	23
Tax benefits of stock option exercises and award vesting	197	486
Net payments for stockholder issuances and buybacks	(1,649)	(790)
Net cash provided by (used in) financing activities	(19,701)	5,184
Effect of exchange rate on cash	(245)	(389)
Increase (decrease) in cash	(10,260)	1,616
Cash, beginning of period	14,725	4,097
Cash, end of period	4,465	5,713
Cash paid during the period for:
Interest	754	830
Income taxes	$ 120	$ 1,468